JPH08199869A - Door locking device of box for electrical equipment installation - Google Patents

Abstract

PURPOSE: To equally compress and deform a packing material extending over the full circumference as well as to enable the decrease in door thickness with a small depth of a whole device. CONSTITUTION: A drawer rotary type lock handle mechanism 8 to be operated from the outer surface of a door 3 is embedded in this door 3 tight enough, while both locking and unlocking operations of this lock handle mechanism 8 is converted into a vertical reciprocating motion, and a gremon mechanical unit 9 outputting via a vertical pair of effectors 24 and 2 is attached tight to an inner surface of the door 3 standing side by side with the lock handle mechanism 8. Then, an interlocking linkage mechanism 70, which transmits torque of a locking shaft of the lock handle mechanism 8 to a shaft 22 of the gremon mechanism unit 9, is installed there, and a turning transmission unit 12 is set up in an inner surface corner part of the door 3. A locker 13 is attached to both vertical and horizontal rods 10 and 11 connecting both these units 9 and 12, and then a latched frame 14 engaging with this locker 13 is set up in a front wall 1a of a box body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical equipment installation box represented by a switchboard, a distribution board, and a control panel, and an improved door locking device for the box.

[0002]

2. Description of the Related Art FIG. 9 shows a typical example of a conventional door lock device applied to an electrical equipment installation box (hereinafter referred to as a box). This locking device is incorporated in the inner surface of the door whose one end is supported by a hinge, and has a shaft 60 that is rotated from the outer surface of the door and a lever 6 that rotates together with the shaft 60.
1 and a latch 62, a pair of rods 63 that move up and down in response to the movement of the lever 61, a latch roller 64 attached to the tip of the rod 63, and the like. The latch 62 and the latch roller 64 are provided in the opening 6 of the box body 65, respectively.
6 is locked to the inner edge wall of 6 to prevent the door from being opened, and when the shaft 60 is rotated in the direction of the arrow, the latch 62 is released.
Also, the hooking roller 64 retreats to the position indicated by the imaginary line, and the hooked state with the inner edge wall of the opening 66 is released. There is also a lock device that locks the door closed to the box body with a lever-link type latch.

In the present invention, a deflection transmission device is arranged at the inner corner of the door to transmit the movement of the vertically moving rod to the horizontally moving rod. This type of device is disclosed in, for example, Japanese Patent Laid-Open No. 4-16.
It is known from Japanese Patent No. 0260.

[0004]

As described above, the latch 6 is used.
In the lock device in which 2 and the latching roller 64 pass through the opening 66 and are latched to the inner edge wall thereof, not only the latch 62 and the latching roller 64 but also the entire locking device inside the opening 66 in the unlocked state. Must be located in the area. In many cases, the opening 66 has a similar shape which is slightly smaller than the front outline of the box body.
On the inner surface of the door, the locking device is arranged at a position far away from the swinging edge. Therefore, when arranging electric equipment, fixtures, etc. using the inner surface of the door, the usable area is reduced by the area occupied by the lock device.

A flange 67 projects from the outer peripheral edge of the opening 66, and a packing on the inner surface of the door is brought into contact with the flange 67 to seal the space between the door and the opening 66 to prevent rainwater, dust, etc. Prevents intrusion. Naturally, the packing is pressed against the flange 67 when the latch 62 and the latch roller 64 are latched to the opening 66. However, since the locking portion between the lock device and the box body 65 is limited to the swinging end of the door, the packing cannot be evenly pressed against the flange 67. Particularly in the case of a large box, the distance between the latch 62 and the latch roller 64 and the distance between the latch roller 64 and the hinge become large, so that the tightening margin of the packing is likely to vary, and a sufficient latching is provided. It is difficult to obtain a stopping action. In order to avoid these disadvantages, there are some boxes in which multiple lever-link type latches are provided on the door to increase the number of fastening points on the door.However, this requires operating multiple latches each time the door is opened and closed. It must be done, and its operation is troublesome. The cost of the locking device is high.

An object of the present invention is to provide a door lock device suitable for a box which can lock a door to a box body at a number of places to provide a sufficient tightening margin for a packing and which is reluctant to intrude rainwater or dust. is there. An object of the present invention is to provide a door locking device that can lock and unlock a large number of fastening points at the same time with one touch and can easily open and close the door. An object of the present invention is to provide a door locking device that can utilize the entire inner surface area of a door surrounded by packing for disposing electrical equipment, fixtures, and the like. A further object of the present invention is to provide a door locking device that can reduce the thickness of the door as much as possible because the depth of the entire device can be reduced.

[0007]

The locking device of the present invention comprises:
The box main body 1 and the door 3 supported swingably about the vertical axis via a hinge 5 arranged on one side of the front surface of the box main body 1 are provided. The front wall 1a of the box main body 1 is opened and closed by the door 3. The opening of the electric equipment installation box is provided with the opening 2 provided therein, and the packing 6 is arranged on one of the flange 4 at the peripheral edge of the opening 2 and the inner wall of the door 3. The lock device is embedded and fixed in the door 3, and a drawer rotation type lock handle mechanism 8 that is locked / unlocked from the outer surface of the door 3; and a drawer rotation type lock handle mechanism 8 arranged side by side on the inner surface of the door 3. And a gremone mechanism unit 9 that converts the locking / unlocking operation of the drawer rotation type lock handle mechanism 8 into a vertical reciprocating operation and outputs it through a pair of upper and lower actuating bodies 24.2; a drawer rotation type lock handle An interlocking link mechanism 70 for transmitting the rotational force of the locking shaft 112 of the mechanism 8 to the shaft 22 of the Gremon mechanism unit 9; and a deflection transmission unit 12 arranged at the inner corner of the door 3.
Vertical and horizontal rods 10 and 11 which are connected to the input rod 34 and the output rod 35 of the deflection transmission unit 12 and move up and down or left and right in conjunction with the reciprocating motion of the actuating bodies 24 and 25.
A lock tool 13 attached to each rod 10 and 11; and a locking frame 14 arranged on the front wall 1a of the box body 1 corresponding to the lock tool 13.

In the closed state, the locking device except the latch frame 14 is arranged along the inner peripheral edge of the door 3 facing the front wall 1a outside the outer peripheral edge of the flange 4. With the drawer rotation type lock handle mechanism 8 locked,
The locking frames 14 are arranged so that all the locks 13 simultaneously engage with the corresponding locking frames 14.

Specifically, the lock tool 13 is provided with a bracket 43 projecting toward the front wall 1a in the closed state.
And a roller 4 rotatably supported by a bracket 43 around an axis perpendicular to the reciprocating direction of the rods 10 and 11.
5 and. The hooking frame 14 has a hook-shaped hooking frame 48 projecting from the front wall 1a toward the door 3 side, and on the inner surface of a receiving wall 49 of the hooking portion 48 substantially parallel to the front wall 1a, An inclined surface 50 is formed for pulling and operating the roller 45 toward the box body 1.

The Gremon mechanism unit 9 includes a shaft 22 rotatably supported by a pair of front and rear bases 12, a driving lever 23 fixed to the shaft 22 so as to be rotatable together, and a driving lever 23.
The actuators 24 and 24 are respectively connected to both free ends of the and, and the latch arm 29 is provided so as to be rotatable along with the shaft 22. Each of the driving lever 23 and the actuating bodies 24, 24 is arranged between the pair of bases 21. Both bases 21
Each of the actuating members 24, 24 is vertically movably guided and supported by a guide pin 27 fixed to. The latch arm 29 is configured to latch on the inner surface of the flange 4 when the drive lever 23 is rotated to the locked position.

The deflection transmission unit 12 includes a holder 32 having an L-shaped guide groove 31, an input rod 34 and an output rod 35 which are reciprocally supported by a linear groove portion 33 of the guide groove 31, and both. Guide groove 31 between the rods 34 and 35
A large number of transmission rollers 36 loaded in the guide groove 31
And a flexible metal belt 40 that connects both rods 34 and 35 along.

[0012]

In the lock device, a large number of locks 13 provided on the door 3 side are engaged with the engagement frame 14 provided on the front wall 1a of the box body 1 to engage the door 3 with the box body 1. Lock to lock. According to the mode in which the door 3 is latched and engaged at a large number of places at the same time, the packing 6 arranged circumferentially along the flange 4 is uniformly compressed and deformed over its entire length to reliably seal the opening 2. Can be stopped. The locks 13 are provided on the vertical and horizontal rods 10 and 11, and the locking / unlocking operation of the drawer rotation type lock handle mechanism 8 is performed through the Gremon mechanism unit 9, the rods 10 and 11 and the direction transmission unit 12. Since they are simultaneously transmitted to the lock levers 13, a large number of lock tools 13 can be simultaneously locked or unlocked with respect to the locking frame 14 simply by operating the drawer rotation type lock handle mechanism 8. Since the locking frame 14 is arranged on the front wall 1a surrounding the flange 4 and the locking device other than the locking frame 14 is arranged along the inner peripheral edge of the door 3 facing the front wall 1a, it is surrounded by the packing 6. The entire inner surface area of the door 3 can be effectively used as a location for arranging electric devices and equipment.

[0013]

According to the door lock device of the present invention, the door 3
Since the plurality of locking tools 13 provided on the inner surface of the door 3 are engaged with the plurality of locking frames 14 provided on the front wall 1a of the box body 1 to lock and close the door 3, the flange 4 and the door 3 are fixed. It is possible to uniformly compress and deform the packing 6 located between the inner wall and the inner wall. As a result, a box can be obtained in which the opening 2 can be reliably sealed to prevent rainwater, dust, and the like from entering for a long period of time. The lock / unlock operation of the drawer rotation type lock handle mechanism 8 is performed by the Gremon mechanism unit 9
The vertical and horizontal rods 10 and 11 and the deflection transmission unit 12
Since it is simultaneously transmitted to a large number of locking tools 13 via the locks, even though the door 3 is fastened at a large number of places, the locking tools 13
The latching and unlocking operations can be performed with one touch, and the door 3 can be easily opened and closed.

Since the lock device is arranged on the front wall 1a surrounding the flange 4 and the inner peripheral edge of the door 3 facing the front wall 1a in the closed state, the entire inner surface area of the door 3 surrounded by the packing 6 is provided. It is possible to effectively utilize the space inside the box by effectively utilizing the above for the arrangement of electric devices and equipment.

The drawer rotation type lock handle mechanism 8 is
The Gremon mechanism unit 9, which is embedded and fixed in the door 3 and converts the locking / unlocking operation of the drawer rotation type lock handle mechanism 8 into a vertical reciprocating operation, is arranged on the inner surface of the door 3 side by side with the drawer rotation type lock handle mechanism 8. Since it is arranged, the depth of the entire device can be reduced, and the thickness of the door can be reduced as much as possible.

[0016]

1 to 12 show an embodiment of a door locking device according to the present invention. In FIG. 2, reference numeral 1 is a box body formed in a vertically long box shape, 2 is an opening provided in the front surface of the box body 1, and 3 is a door for opening and closing the opening. The opening 2 is formed in a vertically long rectangular shape which is slightly smaller than the front outline of the box body 1. The door 3 is the box body 1
Main surface wall 3a having the same shape and size as the inner contour line of the front concave portion, peripheral wall 3b continuously bent at right angles to each side portion of main surface wall 3a, and inner surface of each peripheral wall 3b from the inner end to the main surface wall 3a and a narrow inner edge wall 3c folded in parallel with each other to form a thin box having an open inner surface, and supported by three upper and lower hinges 5 arranged along the right side edge of the box body 1. , Swinging around the vertical axis passing through the hinge center of each hinge 5 can be opened and closed. A rubber packing 6 is attached and fixed to the inner surface of the door 3. In the closed state, the packing 6 contacts the flange 4 and seals the opening 2. The box body 1 and the door 3 are each formed of a steel plate.

In order to fix the door 3 so that it cannot be opened in the closed state and to compress and deform the packing 6 in the circumferential direction evenly, the inner surface of the door 3 and the front wall 1a of the box body 1 are fixed.
A lock device for the door is installed between and. In FIG. 1 and FIG. 2, the door locking device includes a drawer rotation type lock handle mechanism 8 that is locked and unlocked from the outer surface of the door 3 and a drawer rotation mechanism along the inner peripheral edge of the door 3 facing the front wall 1a. Glemon mechanism unit 9 arranged side by side with the mold lock handle mechanism 8, a link mechanism 70 for interlocking between the drawer rotation type lock handle mechanism 8 and the Gremon mechanism unit 9, vertical and horizontal rods 10 and 11, a direction transmission unit 12, each rod 10. The four locks 13 mounted on the 11 and the latching frame 14 provided on the front wall 1a side.

The drawer rotation type lock handle mechanism 8 is
It is embedded and fixed in the mounting hole 75 of the front plate portion 3a of the door 3,
A casing 104 having only the front flange portion 107 protruding toward the front side of the door 3; a locking shaft 112 that is rotatably and axially immovably fitted into a shaft cylinder portion 105 at the base end of the casing 104; A handle 119 that is retractably housed in the front recess 106 and has a proximal end pivotally attached to the front end of the locking shaft 112 by a transverse pivot 117; and a handle 119 mounted between the locking shaft 112 and the handle 119, with the pivot 117 as the center. A drive spring 118 for urging the handle 119 to rotate in the protruding direction; a distal end portion of the handle 119 is connected by a transverse pivot shaft 125, and a leg portion 128 is projectingly provided on the back side, and is locked at the tip portion of the leg portion 128. A push button 127 provided with a claw portion 129; a posture that is provided between the handle 119 and the push button 127, and aligns the push button 127 on the extension of the handle 119. A lifting spring 126; casing 10
4 is fixed to the front end of the front concave portion 106 of the push button 12
When 7 is pushed and rotated about the pivot 125, the bent plate portion 135 at the tip portion is locked by the locking claw portion 129 of the leg portion 128.
And a receiving spring 134 that engages with the push button 127 to hold the push button 127 at the pushing position.

The lock handle mechanism 8 is further embedded and fixed in the lock housing portion 120 provided at the tip of the handle 119, the lock plate 133 moves forward and backward in conjunction with the rotation of the rotor 132 by the key 138, and the push button 127. A lock unit 131 which comes into contact with the leg portion 128 of the push button 127 to restrain the rotation of the push button 127;
When the push plate 127 is rotated about the position of 5, the bent plate portion 137 of the tip portion engages with the locking claw portion 129 of the leg portion 128, and the receiving spring 134 is provided to hold the push button 127 in the pushed position. The push button 127 is provided with the elliptical shaft hole 150 in an oblique direction, the transverse pivot shaft 125 is inserted into the shaft hole 150, and the push button 127 is attached to the handle 119. Lock plate 133 that is pivotally attached to the rotor 132 of the lock unit 131.
Is moved to the projecting position, and the rotation of the push button 127 is restricted by the lock plate 133.

The interlocking link mechanism 70 includes the first link 7
9 and the second link 71, the first link 79
Is a lock shaft 1 of the drawer rotation type lock handle mechanism 8
2 is fitted in the rear end angular shaft portion 112b in the square hole 110 so as not to be rotatable relative to each other, and the base end portion is fixed to the locking shaft 112 by the screw 145 screwed into the screw hole 113 of the locking shaft 12 through the flat washer 148 and the spring washer 149. It is fixed. The second link 71 connects the square shaft 22 of the Gremont mechanism unit 9 to the square hole 7
4, the base end portion is fixed to the square shaft 22 by a screw 76 which is fitted so as not to rotate relatively and is screwed into a screw hole 80 of the square shaft 22 through a washer 78. The tip of the second link 71 is connected to the first link 79 by a shaft pin 72 that passes through a long hole 73 in the tip of the first link 79.

In this lock handle mechanism 8, when the handle 119 is held in the front concave portion 106 of the casing 104, the locking claw portion 1 of the push button 127 is held.
29 is engaged with the receiving spring 134. At this time, the lock plate 133 that is interlocked with the rotor 132 of the lock unit 131 of the handle 119 is in the protruding position and is in contact with the back surface portion 128 a of the leg portion 128 of the push button 127. As a result, the push button 128 is non-rotatably restrained, and the handle 119 is accurately locked in the retracted position.

When the handle 119 is projected, a predetermined key 138 is inserted into the lock unit 131, the rotor 132 is rotated in the unlocking direction, the lock plate 133 is retracted, and the rotation restraint of the push button 127 is released. In this state, when the front portion 127a of the push button 127 is pushed with a fingertip,
The push button 127 rotates around the transverse pivot 125 in the direction of the lock unit 131 against the bias of the posture holding spring 126, and the locking claw 129 of the leg 128 and the receiving spring 1 are received.
The engagement with 34 is released. At this stage, the locking claw portion 1
Since 29 is engaged with the bent plate portion 137 at the tip of the leaf spring 136 and the holding force of the leaf spring 136 is stronger than the rotational biasing force of the posture holding spring 126, the push button 127 pushes the push button 127. In this state, the locking claw portion 129 is held at the retracted position where it does not catch on the tip of the receiving spring 134.

As shown in FIG. 12, the shaft hole 150 of the push button 127 has an elliptical shape and is provided obliquely. Normally, the transverse pivot 125 is located in the upper right portion 150a of the shaft hole 150. When the push button 127 is pushed in, it receives a reaction force from the leaf spring 136 and slides in the lower left direction 150b of the ellipse, so that the locking claw portion 129 causes the protruding portion 1 of the leaf spring 136 to move.
Go over 36a. When the push button 127 is released, the transverse pivot shaft 125 slides in the upper right direction again and returns to the original position.

When the fingertip moves from the front surface 127a of the push button 127 and the push button 127 is released, the rotational biasing force of the drive spring 118 is stronger than the holding force of the leaf spring 136, so that the handle 119 is instantaneously moved. Then, it rapidly rotates about the transverse axis 125 and projects from the front recess 106 of the casing 104. When the handle 119 is projected, the push button 127 is reversely rotated by the biasing force of the posture holding spring 126, and is returned to the position aligned on the extension of the handle 119.

When the protruding handle 119 is grasped and rotated in a predetermined direction, the locking shaft 112 connected to the handle 119 by the transverse pivot 117 is supported by the shaft cylinder portion 105 and integrally rotates, and the first link of the interlocking link mechanism 70 is rotated. The link 79 rotates. With the rotation of the first link 79, the elongated hole 73
And the second link connected to the first link 79 via the shaft pin 72.
Since the link 71 rotates, the shaft 22 of the Gremon mechanism unit 9 is rotated in the unlocking direction, and the pair of upper and lower actuating bodies 24, 24 are connected via the driving lever 23 to the pair of bases 21,
21 is pulled and driven.

Therefore, all the locks 13 and the latch frame 1
The door 3 which has been disengaged from the box body 4 and whose pulling constraint on the box body 1 has been released is opened by pulling the handle 119 forward. Upon this opening operation, the lock housing portion 120 provided at the tip portion of the handle 119 and the leg portion 128 of the push button 127 connected to the tip portion of the handle 119 are used as a suitable finger hook portion.

When the door 3 is closed and the handle 119 is reversely rotated, the shaft 22 of the Gremon mechanism unit 9 is reversely rotated by the interlocking action of the first link 79 and the second link 71, and the pair of upper and lower actuating bodies 24, 24 is a pair of bases 21,
Since it is driven so as to be pushed out from 21, the pulling engagement of all the lock tools 13 and the locking frame 14 is established, and the door 3 is attracted and locked to the box body 1. At this time, the packing 6 is sufficiently pressed over the entire circumference and exhibits a required sealing effect. After locking the door 3 in this way, the handle 119 is pushed into the front recess 106 of the casing 104.

At the final stage of pushing, the locking claw portion 129 of the push button 127 comes into contact with the upper surface 135a of the bent plate portion 135 of the receiving spring 134, but the pressing of the handle 119 from the front side causes the receiving spring 134 to move. The bending plate portion 135 is bent, and the locking claw portion 129 of the push button 127 and the tip end portion of the receiving spring 134 are engaged with each other. In this way, after pushing the handle 119 into the casing 104, the rotor 13
2 is rotated in the locking direction, the lock plate 133 interlocked with the rotor 132 is moved to the projecting position, and the lock plate 133 is brought into contact with the back surface portion 128a of the leg portion 128 of the push button 127. This pushbutton 127
Rotation of the casing is restricted, and the handle 119 moves to the casing 104.
It is properly locked in the retracted position of the front concave portion 106. Finally, the one key 38 is removed from the lock unit 131, and a series of operations is completed.

The Gremon mechanism unit 9 arranged in parallel with the drawer rotation type lock handle mechanism 8 is fixed to the main surface wall 3a with a screw 19. 3 and 4, the Gremon mechanism unit 9 has a pair of front and rear bases 21 and 21, and the bases 22 support the shaft 22 rotatably. Most of the shaft 22 is composed of an angular shaft portion, and a driving lever 23 is externally fitted to the angular shaft portion, and actuating bodies 24, 24 whose middle portions are obliquely bent at both free ends of the driving lever 23 are pin 2 respectively.
Connect at 5. The pin 25 is moved and guided by an arcuate groove 21a provided in one base 21. The actuating body 24 is made of a press-formed product obtained by punching out a steel plate, and has a connection hole 2 with the pin 25.
6 is formed in a horizontally long oblong hole. This is because the connecting hole 26 absorbs the lateral movement component of the locus of the pin 25. Axis 22
The guide pins 27 are fixed to the upper and lower two places of the bases 21, 21 with the pinch sandwiched therebetween, and the pins 27 move and guide the grooves 28 provided in the upper and lower actuating bodies 24.
When is rotated, each actuating body 24 is moved up and down in the reverse direction.

The deflection transmission unit 12 is arranged at the upper and lower corners on the swinging tip side of the door 3 to convert the vertical reciprocating motion converted by the Gremon mechanism unit 9 into a horizontal reciprocating motion. The deflection transmission unit 12 includes a holder 32 having an L-shaped guide groove 31 therein and a guide groove 3
Input rod 3 which is reciprocally guided and supported by the linear groove 33 of No. 1
4 and the output rod 35, and a large number of transmission rollers 36 loaded in the guide groove 31 between the rods 34 and 35 without any gap,
The rods 34 and 35 are arranged along the inner surface of the guide groove 31.
And a metal belt 40 for connecting the two. The holder 32 is inserted at three points into bolts 51 fixed to the inner surface of the door 3 and fastened with nuts 52. The holder 32 is an inner case body 32a and an outer case body 3 which are plastic molded products.
2b, and both cases 32a and 32b are joined together in a lid-like manner. The transmission roller 36 is a metal roller having a diameter slightly smaller than the groove width of the guide groove 31,
It is formed into a cylindrical shape for weight reduction. The metal belt 40 is formed of a stainless plate material.

Upper and lower actuators 2 of the Gremon mechanism unit 9
4/24 and the input rod 34 of the upper and lower deflection transmission units 12
And are connected by a vertically long rod 10 shown in FIG. Further, the horizontally long rod 11 is connected to the output rod 35 of each of the turning transmission units 12, and the free end thereof is supported by the stopper frame 37. Each of the rods 10 and 11 comprises a pair of connecting rods 38 each having a linear rod shape, and a hat-shaped mounting frame 39 provided between the connecting rods 38, and the lock 13 is mounted on each mounting frame 39.

When the facing distance between the main surface wall 3a and the front wall 1a of the door 3 in the closed state is sufficiently large, each rod 1
It is possible to form the 0 and 11 with a single connecting rod 38 and directly attach the locking device 13 thereto. Stopper frame 37
Is a hat-shaped frame, and the stopper pin 4 is
1 is fixed, and the pin 41 guides the elongated hole 42 provided on the free end side of the connecting rod 38 to prevent the rod 11 from laterally moving beyond the formation range of the elongated hole 42.

In FIGS. 7 and 8, the lock 13 is
Bracket 43 formed by bending a metal plate into an L-shaped cross section
And a shaft 44 supported by one surface wall of the bracket 43,
It is composed of a pair of rollers 45 rotatably supported by a shaft 42, and the rollers 45 project to the inner surface of the door 3 and
The bracket 43 is fixed to the mounting frame 39 so as to rotate about an axis perpendicular to the reciprocating movement direction of 11. As shown in FIG. 1, for the vertically long rod 10, the bracket 43 is fixed to the mounting frame 39 so that the shaft 44 is horizontal, and for the horizontally long rod 11, the bracket 44 is vertical so that the shaft 44 is vertical. 43 is fixed to the mounting frame 39. Of the constituent members of the lock device, the above-mentioned members except the locking frame 14 are arranged along the inner peripheral edge of the door 3 facing the front wall 1a. That is, it is arranged on the inner wall of the door 3 that surrounds the packing 6.

The latching frame 14 is made of a plastic molded product in which a pair of latching portions 48 having an inverted L-shaped cross section are provided in the center of one surface of the base 47 so as to face each other, and the receiving wall located at the projecting end of the latching portion 48. The inner surface of 49 is formed by an inclined surface 50 formed of a partial arc surface. A small gap is secured between the pair of receiving walls 49, and the locking frame 14 is fastened and fixed to the front wall 1a with a screw so that the center of this gap is located on the movement path of the bracket 43. In the unlocked state, the entire lock 13 is located near the latch frame 14 as shown by the imaginary line in FIG.
When the locking operation is performed, the roller 45 enters the inner surface side of the receiving wall 49, contacts the inclined surface 50, and pulls the door 3 toward the front wall 1a.

In the above-described embodiment, the locks 13 are provided at the upper and lower sides of the door 3 and the upper and lower two along the free edge, but the number of the locks 13 installed depends on the size of the door 3. It can be changed freely according to your needs. For example, each horizontal and vertical rod 10
It is possible to attach a plurality of lock tools 13 to 11. The turning transmission units 12 are arranged at the four corners of the inner surface of the door 3, and the turning transmission units 12 and the Gremont mechanism unit 9 are connected in an endless ring shape by the vertical and horizontal rods 10 and 11, and the rods 10 and 11 are connected.
The necessary number of locks 13 may be attached to the.

The locking tool 13 can use L-shaped or T-shaped projections as a hooking element in addition to the roller 45 as a hooking element. The Gremon mechanism unit 9 has a drive lever 23.
Alternatively, the pinion may be used as a driving body, and the pair of racks may be simultaneously moved in opposite directions by the pinion. The lock device of the present invention can also be applied to a box having a double door. The inclined surface 50 can be formed by a linear flat surface. The packing 6 can be attached to the flange 4. The shape structure of the drawer rotation type lock handle mechanism 8 is not limited to the above, and various flat handle devices can be applied.

[Brief description of drawings]

FIG. 1 is a front view showing the outline of a door locking device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway front view of a box to which the door locking device is applied.

FIG. 3 is a partially cutaway front view of a Gremon mechanism unit incorporated in the door lock device.

4 is a cross-sectional view taken along the line AA in FIG.

FIG. 5 is a partially cutaway front view of a deflection transmission unit incorporated in the door locking device.

6 is a sectional view taken along line BB in FIG.

7 is a view taken along the line CC in FIG.

FIG. 8 is a cross-sectional plan view showing an engaged state of a locking tool and a locking frame of the door locking device.

FIG. 9 is a view taken along the line DD in FIG.

FIG. 10 is a right side view of a main part of a box to which the door locking device is applied.

FIG. 11 is a plan view of a main part of a box to which the door locking device is applied.

FIG. 12 is an enlarged vertical sectional view of a push button of a drawer rotation type lock handle mechanism incorporated in the door lock device.

FIG. 13 is a schematic front view of a conventional door lock device.

[Explanation of symbols]

 1 Box Main Body 1a Front Wall of Box Main Body 2 Opening 3 Door 4 Flange 5 Hinge 6 Packing 8 Drawer Rotating Lock Handle Mechanism 9 Gremon Mechanism Unit 10 Rod 11 Rod 12 Transforming Transmission Unit 13 Locking Tool 14 Locking Frame 70 Interlocking Link mechanism

Claims (4)

[Claims] 1. A front wall 1a of a box body 1 comprising a box body 1 and a door 3 which is swingably supported around a vertical axis via a hinge 5 arranged on one side of the front surface of the box body 1. An opening 2 that is opened and closed by a door 3 is provided in the door, and a packing 6 is arranged on either one of the flange 4 on the peripheral edge of the opening 2 and the inner wall of the door 3 to be applied to an electrical equipment installation box body. A lock device for use with a drawer, which is embedded and fixed in the door 3, and which is locked / unlocked from the outer surface of the door 3 by a drawer rotation type lock handle mechanism 8 and an inner surface of the door 3 by which the drawer rotation type lock handle mechanism 8 is arranged side by side. Arranged and drawer rotation type lock handle mechanism 8
The rotation force of the Glemon mechanism unit 9 that converts the locking / unlocking operation of the above into a reciprocating operation in the vertical direction and outputs it through the pair of upper and lower actuating bodies 24 and 2, and the locking shaft 112 of the drawer rotation type lock handle mechanism 8. The interlocking link mechanism 70 for transmitting to the shaft 22 of the Gremon mechanism unit 9 and the turning transmission unit 12 arranged at the inner corner of the door 3
The vertical and horizontal rods 10 and 11 which are connected to the input rod 34 and the output rod 35 of the deflection transmission unit 12 and move up and down or left and right in conjunction with the reciprocating motion of the actuating bodies 24 and 25.
And a locking frame 13 arranged on the front wall 1a of the box body 1 corresponding to the locking tools 13 and the locking tools 13 attached to the rods 10 and 11, respectively. Along the inner peripheral edge of the door 3 facing the front wall 1a outside the peripheral edge, the latch frame 14
Lock devices other than the lock device are arranged, and when the lock body 8 is locked, all the lock members 13
The locking device for the door of the electrical equipment installation box in which the latching frame 14 is arranged so as to be simultaneously latched and engaged with the corresponding latching frame 14. 2. The lock tool 13 is rotatably supported by a bracket 43 protruding toward the front wall 1a in a closed state and a bracket 43 around an axis orthogonal to the reciprocating direction of the rods 10 and 11. The locking frame 14 has a hook-shaped locking frame 48 projecting from the front wall 1a toward the door 3 side, and is substantially parallel to the front wall 1a of the locking portion 48. 2. The door lock device for an electric equipment installation box according to claim 1, wherein an inclined surface 50 for pulling and operating the roller 45 toward the box body 1 is formed on the inner surface of the receiving wall 49. 3. The Gremon mechanism unit 9 includes a shaft 22 rotatably supported by a pair of front and rear bases 12, a driving lever 23 fixed to the shaft 22 so as to be rotatable together, and a driving lever 2.
Actuating members 24, 24 connected to both free ends of 3, respectively,
It is provided with a shaft 22 and a latch arm 29 rotatably provided with the shaft 22, and each of the driving lever 23 and the actuating bodies 24, 24 is
A guide pin 27, which is disposed between the pair of bases 21 and fixed to both bases 21, is used to drive both actuating bodies 24.
Each of 24 is vertically movably guided and supported, and when the driving lever 23 is rotated to the locking position, the latch arm 29 is configured to latch on the inner surface of the flange 4. Or the lock device for the door of the electrical equipment installation box according to 2. 4. The deflection transmission unit 12 includes a holder 32 having an L-shaped guide groove 31, and an input rod 34 supported by a linear groove portion 33 of the guide groove 31 so as to be reciprocally movable.
And the guide groove 3 between the output rod 35 and both rods 34, 35.
1. A large number of transmission rollers 36 loaded in 1 and the guide groove 3
A door locking device for an electric equipment installation box according to claim 1, 2 or 3, comprising a bendable metal belt 40 connecting both rods 34, 35 along the direction 1.